Way back when. . . a friend and I were helping a popular local lure maker make his 'jointer swimbait with a plastic tail' make baits because he couldn't keep up with demand. Big swimbaits were the rage to say the least, and there was all kinds of petty drama going on with hordes of anglers descending on Castaic from all over the country (and the world) hoping to catch the fish of a lifetime, and possibly break the world record.
People were accusing others of using live trout. Some may have been, but I saw people accused that definitely were not doing so because from a distance, these large swimbaits dangling from a rod may have had the appearance of a live trout. Remember that most anglers had never seen big swimbaits like this (the ones we made were about 11" long).
We bought a length of 3-1/2' fence rail and turned it round on a lathe and proceeded to make a 30' version of the popular plug. It actually swam pretty well. We would tie it on to a roller guide tuna rod and stick it into a rod holder on my friend's Skeeter with this monster plug dangling from it while we launched just to watch people point and whisper. Then once we left the launch area, we would put it in the rod locker until it was time to pull the boat out at the end of the day.
I made a custom 13" plug for a friend. A week or two later, I came home from work and he was waiting for me on my porch. He was literally shaking. He said a bass ate the 13" plug and swallowed it so deep that he couldn't see it in the big bass' mouth as he got the fish next to his boat, and then it broke his 20 lbs Trilene and took his 13" plug with her. He said he had caught almost 80 lbs of bass that day before losing the plug. Obviously he wanted me to make him a couple more. As for the shaking. . . . well, if you know, you know.
So, while a 16" plug seems slightly ridiculous, even to me, I wouldn't bet against it where big bass roam.